I didn't track the statistics as a teenager/young man back then, but I do know "we lost a lot of good men" down there on North Avenue "back in the day" for me to be worried about my graduation until maybe my late junior/early senior year. A lot of my buddies in Techwood Dorm were paid "a visit by the Turk" so to speak and left with bags packed. Or else stayed in school by switching to the M train.
Hopefully by switching and changing the culture a bit it may lessen that feeling of seeing the guy or gal on your left and right as someone trying to take your spot in the graduation line. I know this - I am friends, colleagues and neighbors with quite a few SEC alums. When they speak of their undergrad experiences, they do so fondly and with warm memories that I don't hear from my GT buddies. Mind you, we all are glad to have matriculated at the "I" and wouldn't change a thing. But it IS a different experience than the one your golfing buddy who went to Auburn or Ole Miss or the like went through. All anectodal data here of course.